> /? MOST Molecular Solar Thermal Energy Storage
https://www.google.com/search?q=MOST%3A+Molecular+Solar+Ther... :
> ... Molecular solar thermal energy storage systems (MOST) offer emission-free energy storage where solar power is stored via valence isomerization in molecular photoswitches. These photoswitchable molecules can later release the stored energy as heat on-demand.
https://scholar.google.com/scholar?hl=en&as_sdt=0%2C44&q=MOS...
> The technology is based on a specially designed molecule of carbon, hydrogen and nitrogen that changes shape when it comes into contact with sunlight.
> It shape-shifts into an ‘energy-rich isomer’ - a molecule made up of the same atoms but arranged together in a different way. The isomer can then be stored in liquid form for later use when needed, such as at night or in the depths of winter.
> A catalyst releases the saved energy as heat while returning the molecule to its original shape, ready to be used again.
> Over the years, researchers have refined the system to the point that it is now possible to store the energy for an incredible 18 years
The Szilard-Chalmers MOST process.
And then at what efficiency? "How the gas turbine conquered the electric power industry" https://news.ycombinator.com/item?id=38307596#38314851